Those lower doses are not as fashionable as they were for an acute relapse.
When I was first dx in 1999, it was still routine for neuros to prescribe fairly dainty little doses of oral steroids for a relapse, with a taper-off and so on. I remember counting out those wee 1mg tablets to make them add up to the exact amount set down for that day! Thinking has changed a lot since then, and a 3 or 5-day high-dose blast has been the norm for a little while now (and I’ve had that a couple of times over the years).
I’ve just been over to the NICE website to look at the hot-off-the-press Oct 2014 MS treatment guidelines (CG186) that replace the 2003 version (which also recommended high-dose, I think, although I haven’t checked that). Here’s a copy and paste from the new guidelines:
’Treating a relapse
1.7.7Offer treatment for relapse of MS with oral methylprednisolone 0.5 g daily for 5 days.
1.7.8Consider intravenous methylprednisolone 1 g daily for 3–5 days as an alternative for people with MS:
1.7.9Do not prescribe steroids at lower doses than methylprednisolone 0.5 g daily for 5 days to treat an acute relapse of MS.
1.7.10Do not give people with MS a supply of steroids to self‑administer at home for future relapses.'
And here’s the link to the source document: Recommendations | Multiple sclerosis in adults: management | Guidance | NICE
Whatever dose your GP thinks is right for you, I hope that it does the trick.